Tree-ring measurements of Picea mariana (Black spruce) from sample CHARLPLA-61
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Species PCMA; No of rings 87; Begin 1901; End 1987
物种(Species):PCMA;年轮数(No of rings):87;起始年份(Begin):1901;结束年份(End):1987

Species PCMA; No of rings 87; Begin 1901; End 1987
物种(Species):PCMA;年轮数(No of rings):87;起始年份(Begin):1901;结束年份(End):1987